Abstract: The HDDR-NdFeB powders are coated with three kinds of anticorrosion oil.The oxidation behaviors,mechanical and magnetic properties of the flexible bonded magnets produced by the treated powders using calendering technics are systematically studied.The experimental results shows that all the treatments can improve the anticorrosion properties of the magnets.The treatment of anticorrosion oil can enhances the resilience and flexible of magnets,whose maximal elongation is as high as 389%,but can reduces the tensile strength of the magnets simultaneously.In the process of calendaring,anticorrosion oil can enhance the anticorrosion property of magnetic powders. The ratio of magnetic powders （standard sieve of 100-mesh） to rubber can be substantially increased from 10:1 to 25:1 on account of anticorrosion oil,and the （BH）max can be enhanced by 41.2%.